See Sharp
Interested in learning C# or even .NET? The open source Ximian C# compiler is available for .NET and Linux at www.go-mono.com. Another free compiler is #develop with a full IDE for both C# and VB.NET at www.icsharpcode.net.
With open source rivals like these, commercial C# producers like Microsoft and Borland face a stiff challenge, especially with the migration of C# and .NET to non-Microsoft operating systems.
